Using poor sources of entropy like /dev/urandom on Linux, or worse, gettimeofday(), and using them to generate long-lived keys.
He missed the point, people complained because he claimed urandom was a poor source of entropy. That post is about using urandom securely, and he even shows that he doesn't know the difference between random and urandom.
We have also developed a BitTorrent server, the Seed Bank, that can efficiently seed millions of torrents. No more dead torrents because the seeds have all disappeared.
I wouldn't call that controversy, from what I can tell they've always been clear about what they are. Ghost Rank option is literally the first thing you see in the Ghostery options. As long as they respect that, I have no problems with them.